Ok, I've played the 1st few traps for about 20 minutes. I have the following statements:

I find it nearly impossible to get into the crawlspace on my left before the falling boulder crushes me. Is that what you're supposed to do? Because if you move to the open area on the left, you're surrounded by spikes and steel crates. I'll continue to try and get into the left crawlspace until you say otherwise. On a side note, the left tutorial arrow boulder the boulder that falls is very misleading because if you hold left too long, the spikes protecting the gem will kill you.

Edit: I finally did get past the boulder. Thankfully the parts farther ahead look more friendly.